C. three sides with the same length
Answer:

Step-by-step explanation:
Hi there!
Midpoint =
where the two endpoints are
and 
Plug in the given information:
Midpoint = (5,3), Endpoint = (5,5)
where
is the other endpoint
Solve for
:

Solve for
:

Therefore, the other endpoint
is
.
I hope this helps!
Answer:
$35,000
Step-by-step explanation:
if $50,000 is to install an area of 1,000 square feet swimming pool and $35,000 can be used to install an 800 square foot swimming pool I think the best graph model is 800 square feet for $35,000 for a cost cut of $15,000 is a good bargain